A common size statement, also known as vertical analysis, is a financial statement that presents each line item as a percentage of a base value, making it easier to analyze and compare a company’s financial performance over time or against competitors.
Financial statements are essential tools for businesses, investors, and analysts to assess a company’s performance. Among these, the Common Size Statement is a powerful analytical tool that simplifies financial data comparison. It converts absolute figures into percentages, making it easier to evaluate a company’s financial health over time or against competitors.
In this article, we’ll explore:
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What a Common Size Statement is
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Its types and how to prepare one
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Advantages and limitations
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Practical examples
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Frequently Asked Questions (FAQs)
What is a Common Size Statement?
A Common Size Statement is a financial document that presents all items as percentages of a common base figure rather than absolute numbers. This standardization allows for better comparison across different companies or time periods.
There are two main types of common size statements:
- Common size income statement: This expresses each line item on the income statement as a percentage of total revenue. This allows you to see how much of each dollar of revenue is consumed by costs, leading to profit.
- Common size balance sheet: This expresses each line item on the balance sheet as a percentage of total assets for the liabilities and shareholder equity, and as a percentage of total liabilities and shareholder equity for the assets. This helps you understand the composition of the company’s assets and how they are financed.
Key points about common size statements:
- Benefits:
- Easier comparison: Allows for easy comparison of a company’s financial performance over time or against competitors, even if the companies have different revenue or total asset amounts.
- Focus on composition: Helps to understand the relative importance of each line item and its contribution to the overall financial picture.
- Limitations:
- Does not consider industry standards: Doesn’t tell you how the company compares to its industry peers in terms of specific percentages.
- Ignores absolute values: Doesn’t provide information about the absolute dollar values of the financial statement items, only their relative proportions.
How to Prepare a Common Size Statement
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Step 1: List all income and expense items.
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Step 2: Choose total revenue as the base (100%).
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Step 3: Divide each line item by total revenue and multiply by 100 to get the percentage.
Example:
| Item | Amount ($) | Percentage (%) |
|---|---|---|
| Revenue | 500,000 | 100% |
| Cost of Goods Sold (COGS) | 300,000 | 60% |
| Gross Profit | 200,000 | 40% |
| Operating Expenses | 100,000 | 20% |
| Net Profit | 100,000 | 20% |
2. Common Size Balance Sheet
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Step 1: List all assets, liabilities, and equity items.
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Step 2: Choose total assets (for assets) or total liabilities & equity (for liabilities/equity) as the base (100%).
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Step 3: Convert each item into a percentage of the base.
Example:
| Item | Amount ($) | Percentage (%) |
|---|---|---|
| Assets | ||
| Cash | 50,000 | 10% |
| Accounts Receivable | 100,000 | 20% |
| Inventory | 150,000 | 30% |
| Total Assets | 500,000 | 100% |
| Liabilities & Equity | ||
| Accounts Payable | 100,000 | 20% |
| Long-term Debt | 200,000 | 40% |
| Shareholder’s Equity | 200,000 | 40% |
| Total Liabilities & Equity | 500,000 | 100% |
Advantages of Common Size Statements
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Simplifies Comparison – Helps compare companies of different sizes.
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Identifies Trends – Highlights changes in cost structures or profitability over time.
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Benchmarking – Useful for industry analysis and competitor benchmarking.
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Better Financial Planning – Helps in budgeting and forecasting by analyzing expense patterns.
Limitations of Common Size Statements
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No Absolute Values – Percentages alone don’t show actual monetary changes.
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Industry-Specific Variations – Different industries have different cost structures, making comparisons tricky.
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Accounting Policy Differences – Variations in accounting methods can distort comparisons.
Practical Example: Analyzing a Company’s Performance
Let’s compare two companies (Company A and Company B) using a Common Size Income Statement:
| Item | Company A (%) | Company B (%) |
|---|---|---|
| Revenue | 100% | 100% |
| COGS | 60% | 50% |
| Gross Profit | 40% | 50% |
| Operating Expenses | 20% | 30% |
| Net Profit | 20% | 20% |
Analysis:
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Company B has a lower COGS (50% vs. 60%), indicating better cost control.
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However, Company B has higher operating expenses (30% vs. 20%), reducing its net profit margin.
Conclusion
A Common Size Statement is a valuable financial analysis tool that converts raw numbers into percentages for better comparison and trend analysis. While it has limitations, its ability to standardize financial data makes it indispensable for investors, analysts, and business owners.
By using this technique, stakeholders can gain deeper insights into a company’s financial structure and make more informed decisions.
FAQs on Common Size Statements
It helps in comparing financial statements by converting absolute figures into percentages, making it easier to analyze trends and performance across different periods or companies.
The base figure is total revenue (or sales), set at 100%, and all other items are expressed as a percentage of this base.
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For Assets, the base is Total Assets (100%).
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For Liabilities & Equity, the base is Total Liabilities & Equity (100%).
Yes, they are particularly useful for comparing companies of different sizes or within the same industry.
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They don’t show absolute values.
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Industry differences can affect comparability.
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Accounting method variations may lead to inconsistencies.
They can be prepared quarterly, annually, or as needed for financial analysis.
No. A Comparative Statement compares absolute numbers side-by-side, while a Common Size Statement converts figures into percentages for relative analysis.
Yes, though less common, a Common Size Cash Flow Statement can be prepared using total cash inflows/outflows as the base.
Investors use it to assess profitability trends, cost efficiency, and financial stability before making investment decisions.
Financial tools like QuickBooks, Excel, and specialized accounting software can automate the conversion of financial statements into common size formats.
Overall, common size statements are a valuable tool for financial statement analysis, but they should be used in conjunction with other techniques like horizontal analysis and ratio analysis for a more comprehensive understanding of a company’s financial health and performance.